- Patients must be 1.001 to 21.999 years at diagnosis NOTE: Patients meeting all of the above eligibility criteria are eligible for registration on 9900 whether or not they are to be entered on a COG frontline protocol for treatment of newly diagnosed ALL. Registration on 9900 is required for all legacy POG institution patients in order to be eligible for entry on the following COG ALL studies, which are either currently open or only temporarily closed: P9407, 9904, 9905, 9907, AALL0031 and AALL00P2.